Package fuzzy :: Package set :: Module ZFunction :: Class ZFunction

Class ZFunction

Realize a Z-shaped fuzzy set:

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        \
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        | a |
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       2*delta

Instance Methods

[hide private]

__init__(self, a=0.0, delta=1.0)
Initialize a Z-shaped fuzzy set.

source code

float

__call__(self, x)
Return membership of x in this fuzzy set.

source code

Inherited from SFunction.SFunction: __repr__, getCOG, getValuesX

Inherited from Set.Set: getValuesXY

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __str__, __subclasshook__

Class Variables

[hide private]

Inherited from Function.Function (private): _resolution

Instance Variables

[hide private]

float

a
center of set.

float

delta
absolute distance between x-values for minimum and maximum.

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, a=0.0, delta=1.0)
(Constructor)

source code

Initialize a Z-shaped fuzzy set.

Parameters:

a (float) - center of set
delta (float) - absolute distance between x-values for minimum and maximum

Overrides: object.__init__

call(self, x)
(Call operator)

source code

Return membership of x in this fuzzy set. This method makes the set work like a function.

Parameters:

x (float) - value for which the membership is to calculate

Returns: float

membership

Overrides: Set.Set.__call__

Class ZFunction

__init__(self, a=0.0, delta=1.0) (Constructor)

__call__(self, x) (Call operator)

init(self, a=0.0, delta=1.0)
(Constructor)

call(self, x)
(Call operator)